Specifications

Specifications include,
but are not limited to:Three major drainage ways
entering the Town Fall River, Upper Big
Thompson River, and Black Canyon Creek
experienced significant flooding in September
2013. A fourth drainage way, Dry Gulch, enters
the Big Thompson River immediately downstream of
Olympus Dam. The Town needs to plan for a higher
standard of flood resilience since the effective
floodplain hydrology and flood delineation
mapping is approximately 30 years old and did
not match the 2013 flood realities. The purpose
of this Project is to provide information based
on sound science for current and future planning
efforts, land-use and zoning codes, flood
mitigation, resilient project design andFall
River, Upper Big Thompson River, Black Canyon
Creek and Dry Gulch Hydrology Study December 8,
2015 4 implementation, and reducing hydrologic
uncertainty in these streams. The Project
outcome will identify factors and conditions
having a direct impact on the complex drainages
in Fall River, Upper Big Thompson River, Black
Canyon Creek and Dry Gulch including safety,
downtown redevelopment, floodplain management,
bridge and culvert sizing and resizing, channel
stabilization, roadway protection, water quality
to protect aquatic and wildlife habitat, and
stormwater management. This information will be
used in current and future flood mitigation
efforts by ensuring proper design, construction
and zoning of structures within the river
corridors for long-term resiliency and sustainability.